Machine for rolling plate-glass



Ls'mom.

H. A. REYNOLDS.

MACHINE FOR ROLLING PLATE GLASS.

APPLICATION FILED MAY 26, 1920- Patented Apr. 19, 1921.

2 SHEETS-SHEET 1.

IN l/ENTOR H. A. REYNOLDS. MACHINE FOR ROLLING PLATE GLASS.

APPLICATION FILED MAY 26, I920.

Patented Apr. 19, 1921.

2 SHEETS-SHEET 2- INVENTOR UNITEDASTATES PATENT OFFICE.

HARRY A. REYNOLBS, OF FORD 'OITY, PENNSYLVANIA, 'ASSIGNOR TO ZPITTSZBURGH PLATE GLASS COMPANY, A CORPORATION OF PENNSYLVANIA.

mlicnmn FOR. ROLLING HATE-GLASS.

To all whom it may concern Be it known that I, HARRY A. REYNOLDS,-

a citizen of'the United States, and a resident of Ford City, in the county of Armstrong ing Plate-Glasgof which the following is a I l specification.

' the manufacture of plate glass.

. tion of rollin The invention relates to apparatus or machines for rolling glass, such as employed in The invention has for its principal objects the provision of an improved arrangement whereby the roll employed is prevented from be-. 'ing unequally heated between the operation of rolling successive sheets. In rolling mechanism as heretofore employed the proximity of one side of the roll to the table and the castin of the glass against the roll has caused suc unequal expansion that the roll bulged appreciably, and when operated to roll out a sheet of glass produced an uneyen thickness in the sheet. This difliculty arlses not only with a solid roll but also wlth a water cooled roll, which latter, however, 1S distorted to a less degree. The present nvention is designed to overcome or mimmize this trouble, and briefly stated, this is accom plished by providing means for supportmg the roll for rotation at the end of the table and providing means for rotating the roll in such position intermediate successive operations. One embodiment of the invention is illustrated in the accompanying drawin s, wherein:

igure 1 is a plan view of the apparatus, Fig. 2 is a side elevation, Fig. 3 is a sectlon on the line 3-3 of Fig. 4 and Fig. 4 is a partial end elevation. I

Referring. to the drawings, 1 is the table supported on the base members 2 and 3, and 4 is the roll which restsduring the operathe glass upon the rails or trams 55. t the further end of the table is the usual apron 6 bridgingvthe space between the end of the table and the receiving its extreme position at the left, as indicated in dotted lines in Fig. 2, a space is left beneath the roll for the passage of the sheet of glass and the stowing tool in shoving the leer.

Specification of Letters Patent. Patented Apr, 19, 1921" 4 Application filed May 26, 1920. Serial No. 384,461.

sheet of glass off of the table and into the The roll is moved over the table from the position indicated in full lines to the dotted line position by means of the sprocket chains 10 and the motor 11. The sprocket chains 10 are secured at one end tothe apron by means of the hooks 12, and are looped around the pulle s 13 at the ends of the roll,

as indicated in ig. 2, their other ends being secured to the drums 14. These drums are rotated from the motor 11, a reducing transmission 15 and clutch. 16 being interposed between the motor and the shaft 17, which carries the drums 14l4. This mechanism provides for moving the roll 4 from its right hand position (Fig. 2) to its left hand osition, and for permitting the return 0 ,the roll to its starting position at the right of the table after the release of the clutch 16.

At the right hand end of the table are the rollers 1818 and 1919 carried by the These shafts are mounted at their ends in the brackets 22", and the shaft 21 is provided with a sprocket 22 whereby it may be rotated. The rollers are located with their peripheries slightly above the rails 55 as indicated in Flg. 2, so that when the roll 4 arrives at the position indicated in Fig. 2, it is lifted slightly above such rails and is free to rotateupon the rollers 18 and 19.

The rollers 19-19 are rotated to cause the rotation of the roll 4 by means ofthe motor 23. This motor operates through the reducing transmission 24 to rotate thesprocket 25 which is geared to the sprocket 22 by means of the chain 26. In operation the roll 4 occupies theposition indicated in full lines in Fig. 2 when the molten glass is teemed across the table adjacent the roll. The motor 11 is then operated to wind up the sprocket chains 1010 and carry the roll to the left over the table and apron to the position indicated in dotted lines'in Fig. 2, thus rolling out the sheet of glass. The stowing mechanism is then operated to carry the sheet of glass to the left beneath the roll and onto the receiving member 7 of the leer.

The roll may now be returned to its starting position and this is accomplished by re-- leasing the clutch 16 and allowing the roll to move by gravity down the tracks 12 and along the table, its inertia upon striking a bulged roll.

the rollers 1 8-18'being'suficient to carry it to the Xosition indicated in full lines in Fig. 2. around the pulleys 13 are removed there from and the motor 23 is operated to cause the rotation of the roll, and this rotation is ingoperations. Any unequal expansion of the roll due to the pouring o'f'the glass adjacent one side of the roller is also reduced to a minimum 'due to the fact that the roller is being turned so that the point of contact with the molten glass is bein shifted durin the period of time in which the glass is eing poured or' teemed in front of the roller and before its movement to the left is beguna As a result, the roll i in cross section a close approximation of .a circle when the rolling operation begins, and the sheet of glass produced upon the table is of substantially uneven thickness throughout. It is therefore possible to cast the heet relatively thinner than has heretofore been possible since the removal of less glass is necessary in the grinding operation than is the case where the sheets produced are of varying thickness due to the use of What I claim is:

1. In combination in glass rollin mechanism, a table, aroll mounted on t e table for movement longitudinally thereof, means whereby the roll is supported for rotation at the end of the table, and means for rotating the roll while in such position intermediate successive casting operations.

- 2. In combination in glass rolling mechanism, a table, a roll mounted on the table a for movement longitudinally thereof, roller means at the end of the table for receiving the roll, and means for rotating said roller t this time the loops of chain emma means mediate successive, casting operations.

3. In combination m-glass rollin mechanism, a table; a roll mounted on-t e table whereby the roll is raised from the table, at the end of its travel and supported for rotation, and means'for rotating the roll in such position.

to cause a rotation of the roll interfor movement longitudinally thereof, means .5. In combination in glass rolling mechanism, a table, aroll mounted on thetable for movement longitudinally'thereof, a pair of roller members extending transversely of the table at its end and adapted to receive the roll and support it for rotation out of contact with the table, and means whereby one of said roller members may be rotated to cause the rotation of the roll intermediate casting operations.

6. In combination 1n glass rolling mech-. I

I anism, a table, a roll mounted on the table for movement longitudinally thereof, power means, a releasable connection between said means and the roll for moving the roll along the table, means whereby the roll is supported for rotation independent thereof at the end of the table, and a second power means forrotating the roll in such position when released from connection with the first power means. V

7. In combination in glass rolling mechanism, a table, a roll mounted on the table for movement longitudinally thereof, power means for moving the roll along the table, means whereby the roll is supported. independent of the table for rotation at the end thereof, and a second power means for ro-' 4 tating the roll in such position between suc-' cessive casting operations.

'In testimony whereof, I have hereunto subscribed my name this 24th day oflVlay,

1920. HARRY A. REYNOLDS. 

